CN109155497A

CN109155497A - Motor

Info

Publication number: CN109155497A
Application number: CN201780028898.5A
Authority: CN
Inventors: 沈佑燮; 金宪正; 吴性勋
Original assignee: LG Innotek Co Ltd
Current assignee: LG Innotek Co Ltd
Priority date: 2016-05-10
Filing date: 2017-05-02
Publication date: 2019-01-04
Also published as: US20190165656A1; EP3457505A1; WO2017196020A1; US11128203B2; EP3457505A4

Abstract

The present invention provides a kind of motor, which includes: shaft；Rotor, the rotor include hole, and shaft is arranged in the hole；Stator, the stator arrangement is on the outside of rotor；And shell, the shell is for accommodating rotor and stator, and the motor further includes rectifier, the rectifier has hole, shaft is arranged in the hole, wherein, shell includes cover board, cover board includes the brush with rectifier contact, and the front surface of brush includes bending part and cutting tip, bending part and rectifier contact, cutting tip be formed as from bending part be bent so that cutting tip not with rectifier contact, prevent from wearing the advantageous effects for generating foreign matter in the contact portion between brush and rectifier in the initial driving period brush of motor to provide.

Description

Motor

Technical field

The present invention relates to motors.

Background technique

Motor includes the shaft for being formed to rotation, the rotor in conjunction with shaft and is fixed to determining for enclosure interior Son.Stator is arranged along the periphery of rotor, wherein there are gaps between rotor and stator.Motor is drawn by electric interactions Play the rotation of rotor.When coil is wrapped on rotor, equipped with commutator and brush to be provided to the coil being wrapped on rotor Electric current.

In general, commutator is in conjunction with shaft and commutator rotation while being connected to coil, and brush and shell In conjunction with and brush be arranged to contact with commutator.Here, brush is contacted with commutator and brush is powered.

The front surface of brush can have curved surface corresponding with the curved surface of commutator segment.In general, before brush The radius of curvature on surface can be initially formed as the radius of curvature greater than commutator.This is the front surface in order to consider brush It wears and contacts progress surface between commutator and the front surface of brush.However, due in the initial driving state of motor The abrasion of brush and generate foreign matter.There are following problems: generated foreign matter is interfered between commutator and brush and foreign matter Increase the reduced performance that contact resistance makes motor.In order to solve this problem, the front surface of the radius of curvature of commutator and brush Radius of curvature can be configured to be equal.However, due to build-up tolerance, before the front surface of brush is contacted with commutator Two edges of brush are contacted with commutator.Therefore, two edges for brush occur all damage and two edges of brush All lead to the problem of foreign matter.

Meanwhile when the rotor rotates, it may be vibrated due to the out-of-roundness error of commutator.Diameter based on motor To direction, the elastic component that vibrating may be supported by the rear end to brush absorbs.However, on the axial direction of motor There are problems that being easy to be vibrated.Due to vibration, may the axial direction between brush and commutator along motor slide It moves.When sliding, in fact it could happen that the contact resistance between brush and commutator increases so that the problem of current efficiency reduces.

Summary of the invention

[technical problem]

The present invention relates to a kind of motor is provided, which can prevent from being situated between while motor is initially driven by brush The generation of foreign matter caused by the abrasion at contact portion between brush and commutator.

The invention further relates to providing a kind of motor, the motor prevent the vibration due to the axial direction based on motor and may Sliding phenomenon occurs between commutator and brush.

The various aspects of embodiment are not limited to aspect set out above and other aspects not illustrated can be by ability The technical staff in domain is expressly understood by being described below.

[technical solution]

An aspect of of the present present invention provides a kind of motor, which includes: shaft；Rotor, the rotor include hole, shaft cloth It sets in the hole；Stator, the stator arrangement is on the outside of rotor；Shell, the shell accommodate rotor and stator；And commutator, it should Commutator includes hole, and shaft is arranged in the hole.Here, shell includes cover board.Cover board includes the brush contacted with commutator.Electricity The front surface of brush includes: bending part, which contacts with commutator；And cutting tip, the cutting tip pass through At bending part be bent and formed and the cutting tip do not contacted with commutator.

Bending part can be arranged in center based on the width direction of brush, and cutting tip can be based on the width of brush Degree direction is arranged on the two sides of bending part.

Cutting tip can be flat surfaces.

The radius of curvature of bending part can be equal to the radius of curvature of commutator.

Cutting tip can based on pass through commutator center and bending part center the first reference line and symmetrically Arrangement.

The basic circle and the second reference line that cutting tip can be formed based on the peripheral surface along commutator are arranged to Opposite with commutator, which is between the turning as the boundary between bending part and cutting tip The tangent line of intersection.

Cutting tip may be positioned such that based on vertical with the first reference line and passing through the third reference line in crosspoint and tilt.

Another aspect provides a kind of motor, which includes: shaft；Rotor, the rotor include hole, shaft It is arranged in the hole；Stator, the stator arrangement is on the outside of rotor；Shell, the shell accommodate rotor and stator；And commutator, The commutator includes hole, and shaft is arranged in the hole.Here, shell includes cover board.Cover board includes the brush contacted with commutator. Commutator includes toothed section, the toothed section be arranged in the peripheral surface of commutator and the toothed section and electricity Brush contact.

Toothed section may include groove, and axial centre of the groove based on commutator is arranged along circumferential direction.

Multiple this grooves can be disposed with along the axial direction of shaft.

The height based on the axial direction of shaft from bottom end to top end part of toothed section can be higher than brush from Bottom surface to top surface height.

The top end part of toothed section can be disposed above the top end part of brush based on the axial direction of shaft, and saw The bottom end of dentate part can be arranged lower than the top end part of brush.

Commutator may include commutator ontology and commutator segment, which is arranged in the peripheral surface of commutator ontology On, and toothed section can be arranged on the outer surface of commutator segment.

Commutator may include unci, and toothed section can be arranged in commutation based on the axial direction of shaft Between the top end part of piece and the bottom end of unci.

Boundary between the front surface of brush contacted with toothed section and the top surface of brush, which can be, inclines Skewed surface, and the boundary between the front surface of brush contacted with toothed section and the bottom surface of brush can be Inclined surface.

Brush may include protrusion, and the protrusion is arranged in the front surface of brush and is arranged in zigzag In partial groove.

[advantageous effects]

According to each embodiment, it is equal to commutator by being formed as the radius of curvature of the bending part contacted with commutator Radius of curvature and by the two sides in bending part include do not contacted with commutator cutting tip and provide it is following Advantageous effects: it prevents in initial mill of the driven while brush at the contact portion between brush and commutator of motor It damages and causes foreign matter.

By additionally providing following advantageous effects using the toothed section being arranged on commutator: preventing due to based on electricity The vibration of the axial direction of machine and sliding may be generated between commutator and brush.

Detailed description of the invention

Fig. 1 is the view of motor according to one embodiment；

Fig. 2 is the view for illustrating brush；

Fig. 3 is the bending part for illustrating front surface and the view of cutting tip；

Fig. 4 is the view for illustrating the brush of the motor according to another embodiment；

Fig. 5 is the view for illustrating the toothed section being arranged on commutator；

Fig. 6 is the view for illustrating the position of toothed section of commutator；

Fig. 7 is the view for illustrating brush；And

Fig. 8 is the view for illustrating brush and being in the state contacted with the toothed section of commutator.

Specific embodiment

Hereinafter, exemplary embodiments of the present invention are explained in more detail with reference to the accompanying drawings.By following Detailed description and illustrative embodiments related with attached drawing, will be more clearly understood the purpose of the present invention, specific advantage and Novel features.In addition, term used in description and claims should not necessarily be limited by general sense or vocabulary meaning, and answer When the concept that can be suitably limited term based on the present inventor is explained to describe principle of the invention in optimal manner For with the consistent meaning and concept of technological concept of the invention.In addition, about may not be necessary making of the invention to want point fuzziness The detailed description of well known related fields will be omitted.

In order to which various parts are described, the term including ordinal number such as " second ", " first " etc. can be used.So And component is not limited by the term.Term is only applied to distinguish a component with another component.For example, not In the case where deviateing the scope of the present invention, second component can be referred to as the first component, and similarly, and the first component can be by Referred to as second component.Term "and/or" includes one of associated project listed or more any combination of person and owns Combination.

Fig. 1 is the view of motor according to one embodiment.

It referring to Fig.1, may include shaft 100, rotor 200, stator 300 and shell according to the motor of the embodiment 400。

Rotor 200 is arranged in stator 300.Rotor 200 includes the rotor core in conjunction with the center of shaft 100.Rotor 200 may include the multiple T-pieces being arranged on the periphery of rotor core.Here, T-piece can be arranged to towards stator 300. Coil 210 is wound in each T-piece in the T-piece.Insulator is installed in T-piece and the insulator makes T Shape part and coil 210 insulate.

Stator 300 can be in conjunction with the inside of shell 400 and stator 300 may include multiple magnets.Magnet and winding Coil 210 on rotor 200 forms rotating excitation field.Magnet may be disposed so that the pole N and the pole S are based on circumferential direction around the shaft 100 alternately position.Meanwhile stator 300 can be by manufacture multiple isolated iron cores combinations or stator 300 can be with It is manufactured with single core form.

When providing electric current to coil 210, so that the magnet with stator 300 generates electric interactions, so that rotor 200 revolves Turn.When rotor 200 rotates, shaft 100 also rotates.Here, shaft 100 can be supported by bearing.

Meanwhile commutator 500 and brush 600 are required for providing electric current to the rotor 200 of rotation.

Commutator 500 is combined with shaft 100.In addition, commutator 500 can be arranged in 200 top of rotor.In addition, commutation Device 500 is electrically connected to coil 210.

Meanwhile brush 600 is contacted with commutator 500 and brush 600 applies a current to coil 210.

Shell 400 accommodates rotor 200 and stator 300.In addition, shell 400 includes cover board 410.Cover board 410 is to shell 400 Open-top covered.Brush 600 is placed in the bottom surface of cover board 410.Brush 600 is accommodated in receiving portion. Elastic component 700 can be arranged therein in the receiving portion for accommodating brush 600.In addition, wherein accommodating the receiving of brush 600 Portion is combined with cover board 410.When external power supply is connected to the terminal being arranged on cover board 410, electricity is by being arranged on cover board 410 Capacitor be supplied to brush 600.Brush 600 is powered by commutator 500 to coil 210.

Fig. 2 is the view for illustrating brush, and Fig. 3 is the bending part for illustrating front surface and the view of cutting tip Figure.

Referring to Fig. 2 and Fig. 3, brush 600 includes front surface 610, which contacts with commutator 500.In front surface 610 with commutator 500 contact while, brush 600 to commutator 500 provide electric current.

Front surface 610 may include bending part 611 and cutting tip 612.

Bending part 611 is the part being in contact with commutator 500.While commutator 500 rotates, bending part 611 contact with commutator 500, wherein commutator 500 and shaft 100 interact and rotate.

Bending part 611 can be formed to have radius of curvature identical with the radius of curvature of commutator 500.In addition, curved Bent portions 611 can be arranged in the center of brush 600.Cutting tip 612 can be arranged on the two sides of bending part 611.

Cutting tip 612 can be arranged to from the edge of bending part 611 to the edge of front surface 610.Cutting tip 612 It can be structured as flat surfaces.However, the embodiment is without being limited thereto and cutting tip 612 can be formed as curved surface.

Width direction of the cutting tip 612 based on brush 600 is bent in the edge of bending part 611 and is arranged in bending The edge of part 611.Therefore, cutting tip 612 is not contacted with commutator 500.As being shown in FIG. 3, cutting tip 612 It can be arranged on the side opposite with commutator 500 based on the second reference line L1.Here, the second reference line L1 and bending part The virtual tangent line that 611 edge P is drawn at location on the basic circle O of the peripheral surface formation along commutator 500 It is corresponding.

In addition, the cutting tip 612 being arranged on the two sides of bending part 611 can be based in commutator 500 The heart C and first reference line CL at center for passing through bending part 611 is arranged symmetrically.

Although bending part 611 is in contact with commutator 500, cutting tip 612 is not contacted with commutator 500.Cause This, can prevent the edge of the brush 600 as caused by the abrasion with bending part 611 to be worn and generate particle.

That is, even if being designed to have curvature identical with the radius of curvature of commutator 500 in bending part 611 When radius, two edges of bending part 611 may be contacted with commutator 500 first due to build-up tolerance.According to the implementation The motor of mode base and cutting tip 612 for implementing not contact with commutator 500 on two edges in bending part 611 Prevent from breaking or wearing out generation foreign matter by two edges of the bending part 611 of brush 600 in sheet, wherein brush 600 it is curved Two edges of bent portions 611 may contact first with commutator 500 and therefore break or wear out and generate foreign matter.In addition, It is prevented by increasing the adhesive force between bending part 611 and commutator 500 by curved according to the motor of the embodiment It is inserted into foreign matter between bent portions 611 and commutator 500 and generates short circuit.

Fig. 4 is the view for illustrating the brush of the motor according to another embodiment.

Referring to Fig. 4, cutting tip 612 can be arranged to be based on vertical with the first reference line CL and pass through bending part 611 Edge P third reference line L2 and tilt.

Cutting tip 612 can be by forming bending part 611 and then to front surface 610 in front surface 610 Process that two sides are cut and formed.Although it have been described that the embodiment instantiates the above-mentioned of cutting tip 612 simultaneously Two kinds of shapes, but the shape of cutting tip 612 it is without being limited thereto and can be bent at bending part 611 and not with commutator It is carry out various modifications in the range of 500 contacts.

Fig. 5 is the view for illustrating the toothed section being arranged on commutator.Hereinafter, Z axis shown in the accompanying drawings Line direction refers to the axial direction of motor and X-axis line shown in the accompanying drawings direction refers to the radial direction of motor.

Referring to Fig. 5, commutator 500 may include commutator ontology 510 and commutator segment 520.Commutator ontology 510 has cylinder Shape shape.In addition, can be disposed with hole at the center of commutator ontology 510, shaft 100 passes through the hole.Commutator segment 520 is arranged in In the peripheral surface of commutator ontology 510.Commutator segment 520 is formed by metal material and commutator segment 520 and commutator 500 are direct Contact.The bottom end of commutator segment 520 can be bent and form unci 521.Winding coil 210 on rotor 200 can be with It fuses and is connected to unci 521.

Toothed section 530 can be arranged on the surface of commutator segment 520.Toothed section 530 may be embodied as having Protrusion and the alternately repeated shape of recess portion.Therefore, toothed section 530 may include multiple grooves, and in the groove Each groove can the axial centre based on commutator 500 arrange along circumferential direction.That is, toothed section 530 is recessed Slot is aligned along the direction vertical with the axial direction of shaft 100.In addition, the multiple groove of toothed section 530 can edge Shaft 100 axial direction arrangement.

Referring to Fig. 5, the axial direction (the z-axis line direction of Fig. 5) based on shaft 100, from the bottom end of toothed section 530 The 532 height h1 to top end part 531 can be at least more than the height of the bottom surface 630 from brush 600 to top surface 620 h2.This is to increase the contact performance between toothed section 530 and brush 600 for the abrasion in view of brush 600.

Fig. 6 is the view for illustrating the position of toothed section of commutator.

Referring to Fig.1 and Fig. 6, based on the axial direction of shaft 100, toothed section 530 can be arranged in unci 521 Between the top end part of commutator segment 520.In addition, the axial direction based on shaft 100, the top end part 531 of toothed section 530 can To be positioned higher than the top surface 620 of brush 600.In addition, the bottom end 532 of toothed section 530 may be positioned such that and be lower than The bottom surface 630 of brush 600.This is to increase toothed section 530 and brush 600 for the abrasion in view of brush 600 Between contact performance.

Fig. 7 is the view for illustrating brush.

Referring to Fig. 7, the front surface 610 of brush 600 is contacted with toothed section 530.The top surface 620 of brush 600 with Boundary between front surface 610 can be formed to have the inclined surface 640 of kerf.In addition, the bottom surface of brush 600 Boundary between 630 and front surface 610 can also be formed to have the inclined surface 640 of kerf.This allows for brush The abrasion of 600 front surface 610 contacted with toothed section 530.

Referring to Fig. 8, when brush 600 repeatedly rotates while toothed section 530 and brush 600 are in contact with each other, The front surface 610 of brush 600 is worn.In the case where wearing continuation, protrusion is formed in the front surface 610 of brush 600 611a.Protrusion 611a has the shape being located in the groove of toothed section 530.It is recessed due to toothed section 530 Slot along the direction vertical with the axial direction of shaft 100 be aligned and the groove of toothed section 530 along commutator 500 week It is arranged to direction, therefore commutator 500 can be stably rotated while contacting with brush 600.Here, utilization can be passed through The vibration generated in the radial direction in motor is reduced to the elastic component 700 that the rear surface of brush 600 is pressurizeed.In addition, i.e. Make when generating vibration on the axial direction in motor, since the groove and protrusion 611a of toothed section 530 are based on turning The axial direction of axis 100 mutually constrains, therefore can prevent between commutator 500 and the front surface 610 of brush 600 along shaft 100 circumferential direction slides.

The groove of toothed section 530 and the protrusion 611a of brush 600 are configured to increase commutator 500 and brush Contact area between 600.Therefore, it can be improved the efficiency for being supplied to the electric current of motor.

As described above, it is carried out referring to motor of the attached drawing to an illustrative embodiments according to the present invention Detailed description.

It should be noted that said one embodiment of the invention is only an exemplary various aspects and unawareness It is being restrictive, and the scope of the present invention will be defined by the following claims rather than be limited by foregoing detailed description It is fixed.It is all derived from the equivalent of the meaning and scope of claim and claim to repair in addition, should explain Change and is comprised in the scope of the present invention with revisable shape.

100: shaft；200: rotor；300: stator；400: shell；500: commutator；510: commutator ontology；520: changing To piece；530: toothed section；600: brush；610: front surface；611a: protrusion；610: front surface；611: bending section Point；612: cutting tip；620: top surface；630: bottom surface；640: inclined surface.

Claims

1. a kind of motor, comprising:

Shaft；

Rotor, the rotor include hole, and the shaft is arranged in the hole；

Stator, the stator arrangement is on the outside of the rotor；

Shell, the shell accommodate the rotor and the stator；And

Commutator, the commutator include hole, and the shaft is arranged in the hole,

Wherein, the shell includes cover board,

Wherein, the cover board includes the brush contacted with the commutator, and

Wherein, the front surface of the brush includes: bending part, and the bending part is contacted with the commutator；And cutting Part, the cutting tip by the bending part be bent and formed and the cutting tip not with the commutator Contact.

2. motor according to claim 1, wherein during the bending part is arranged in based on the width direction of the brush Centre, and the cutting tip is arranged on the two sides of the bending part based on the width direction of the brush.

3. motor according to claim 2, wherein the cutting tip is flat surfaces.

4. motor according to claim 2, wherein the radius of curvature of the bending part is equal to the curvature of the commutator Radius.

5. motor according to claim 4, wherein the cutting tip is based on passing through the center of the commutator and described First reference line at the center of bending part and be arranged symmetrically.

6. motor according to claim 5, wherein the cutting tip is based on the peripheral surface shape along the commutator At basic circle and the second reference line be arranged to it is opposite with the commutator, wherein second reference line is between work The tangent line of intersection between the turning on the boundary between the bending part and the cutting tip.

7. motor according to claim 6, wherein the cutting tip is positioned to based on vertical with first reference line And it passes through the third reference line in the crosspoint and tilts.

8. a kind of motor, comprising:

Shaft；

Rotor, the rotor include hole, and the shaft is arranged in the hole；

Stator, the stator arrangement is on the outside of the rotor；

Shell, the shell accommodate the rotor and the stator；And

Commutator, the commutator include hole, and the shaft is arranged in the hole,

Wherein, the shell includes cover board,

Wherein, the cover board includes the brush contacted with the commutator, and

Wherein, the commutator includes toothed section, and the toothed section is arranged in the peripheral surface of the commutator And the toothed section and the brush contact.

9. motor according to claim 8, wherein the toothed section includes groove, and the groove is based on described change It is arranged along circumferential direction to the axial centre of device.

10. motor according to claim 9, wherein be disposed with multiple grooves along the axial direction of the shaft.

11. motor according to claim 8, wherein the axial direction based on the shaft of the toothed section from The height of bottom end to top end part is higher than the slave bottom surface of the brush to the height of top surface.

12. motor according to claim 8, wherein axial direction of the top end part of the toothed section based on the shaft Direction is disposed above the top end part of the brush, and the bottom end of the toothed section is arranged lower than the brush Top end part.

13. motor according to claim 8, wherein the commutator includes commutator ontology and commutator segment, the commutation Piece is arranged in the peripheral surface of the commutator ontology, and

Wherein, the toothed section is arranged on the outer surface of the commutator segment.

14. motor according to claim 13, wherein the commutator includes unci, and

Wherein, the toothed section based on the axial direction of the shaft be arranged in the commutator segment top end part and the hook Between the bottom end of shape part.

15. motor according to claim 8, wherein between the preceding table of the brush contacted with the toothed section Boundary between face and the top surface of the brush is inclined surface, and between the brush and the toothed section Boundary between the front surface of contact and the bottom surface of the brush is inclined surface.

16. motor according to claim 9, wherein the brush includes protrusion, and the protrusion is arranged in institute It states in the front surface of brush and is arranged in the groove of the toothed section.